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What is the function of a DC power supply?
By Khalid BetaniDirect current (DC) is the unidirectional flow of electric charge. Direct current is produced by sources such as batteries, thermocouples, solar cells, and commutator-type electric machines of the dynamo type.So the function of a DC Power Supply is to provide Direct current to various accessories of computer such as Hard Disk, Ram, Picture Tube or LCD, Mother Board, CD Rom/DVD Rom, etc, so that they function properly.
How many type of component in NIC?
The components of NIC are : buffer pulse transformers lan dc/dc converters lan filters
What is the function of a filter capacitor in a power supply?
A: The function is to change the pulsating DC into a smooth DC by removing the peak changes. The results are very little AC variation riding on top of the DC value or simply referred as ripple.
What is a DC Port?
Direct Current Port
Is a DC motor single excited or double excited?
It is doubly excited if it is sparately excited dc motor, singly excited if it is self excited machine
What are the different types of braking in dc motors?
plugging rheostatic or dynamic braking regenerative braking
Why use resistor grids in DC motors?
resistor grids were used in DC MOTORS during dynamic braking. in this method of braking a resistance ( variable) is connected across armature winding so as to dissipiate the energy. the energy thus dissipiated is used for braking of motors.
What is meant by braking in dc motor?
Braking in a DC motor refers to methods used to reduce its speed or bring it to a stop. Common braking techniques include dynamic braking, where the motor is switched to operate as a generator, using the generated voltage to create a counter torque; and regenerative braking, which feeds the generated power back into the supply system. Another method is mechanical braking, which physically slows the motor down. Effective braking is essential for controlling motion in applications like electric vehicles and industrial machinery.
What is mechanical loss in dc machines?
Friction and windage causes mechanical loss in DC machines.
What is the principles of DC machines?
All DC machines are works based on the principle of FARADAY'S LAW OF ELECTROMAGNETIC INDUCTION.
How can the field coils of DC machines be connected with self excited machines?
No
How many types of DC machine?
05 types of dc machines
What is dc injection braking for ac motors and how does it work?
works with the concept of DC injection braking, where a dc volt is injected into a three phase rotating magnetic field which causes a stagnet magentic field thus bringing the motor to a complete halt.
How is DC shoes made?
machines
Why carbon brushes are used in DC machines?
Carbon brushes used in DC machines because carbon is soft material and it does not generate spikes when contact with commutator
What is the EMF for DC machines?
Electro Magnetic Field
Why DC motors and DC generators are commonly known as DC machines?
because the dc motor will act as dc generator as same as dc generator acts as a dc motor .so it is called as dc machines.AnswerBecause generators and motors are machines, and operate on d.c.'A.C. machines' are generators, transformers, and motors which operate on a.c.
